The relaxation times of 19F were measured at 30MHz in 3N-purity material. The diffusion constant at 300K was equal to 9.4 x 10-13cm2/s, and this value was slightly lower than that deduced from nuclear magnetic resonance line-narrowing. The diffusivity which was deduced from conductivity data was equal to 5.6 x 10-12cm2/s.

Diffusion in Lanthanum Fluoride Studied with 19F Relaxation. B.Ildstad, I.Svare, T.A.Fjeldly: Physica Status Solidi A, 1977, 43[1], K65-8